2018 was a good and busy year ! Things I have done during the last year
2018 is done! I wanted to share what I have done during the last year. During 2018, probably the biggest decision for me was establishing a company in Turkey. This photo was taken during a CCDE Bootcamp 10 days after I opened an office in Istanbul. Before I established an Office, I was …
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The post 2018 was a good and busy year ! Things I have done during the last year appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
Asterisk on Raspberry Pi
RaspPBX is a project which brings the free and open source Asterisk and FreePBX into Raspberry Pi board. RaspPBX turns Pi into a communications server which can be used by small businesses with up to 12 extensions. FreePBX is a web-based open source GUI that controls and manages Asterisk. Our goal is to show installation of the latest RaspPBX into Raspberry Pi 3 Model B Rev 1.2.
The latest image available for download includes Asterisk 13.20.0 and FreePBX 14.0.2.10.
1. Download, Extract and Copy RaspPBX Image to SD Card
$ wget http://download.raspberry-asterisk.org/raspbx-04-04-2018.zip
$ sudo dd bs=4M if=raspbx-04-04-2018.img of=/dev/mmcblk0 status=progress conv=fsync
$ unzip raspbx-04-04-2018.zip
2. Utilize all space on your SD card
By default the image utilizes only 4GB of your SD card space. Login to the console with username root and password raspberry and issue the command below.
# raspi-config
Navigate to Advanced Options-> A1 Expand Filesystem Ensures that all of the SD card storage is available to the OS. The filesystem will be enlarged upon the next reboot.
3. Configure Static IP Address
Set static IP address for interface eth0.
# echo "interface eth0" >> /etc/dhcpcd.conf
# echo Continue reading
BGP Implicit and Explicit Withdraw
BGP Implicit and Explicit Withdraw are important BGP messages. Understanding these two mechanisms not only help for understanding BGP convergence but also helps for BGP path diversity. While I was explaining BGP Add-Path in my Instructor Led CCDE course, I used the term ‘BGP Implicit Withdraw’ Then someone asked what is ‘ BGP Explicit …
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The post BGP Implicit and Explicit Withdraw appeared first on Cisco Network Design and Architecture | CCDE Bootcamp | orhanergun.net.
Whither Network Engineering? (Part 1)
An article on successful writers who end up driving delivery trucks. My current reading in epistemology for an upcoming PhD seminar. An article on the bifurcation of network engineering skills. Several conversations on various slacks I participate in. What do these things have in common? Just this:
What is to become of network engineering?
While it seems obvious network engineering is changing, it is not so easy to say how it is changing, and how network engineers can survive those changes. To better understand these things, it is good to back up and take in a larger view. A good place to start is to think about how networks are built today.
Networks today are built using an appliance and circuit model. To build a network, an “engineer” (we can argue over the meaning of that word) tries to gauge how much traffic needs to be moved between different points in the business’ geographical space, and then tries to understand the shape of that traffic. Is it layer 2, or layer 3? Which application needs priority over some other application?
Once this set of requirements is drawn up, a long discussion over the right appliances and circuits to purchase to Continue reading
Response: Modchips, Hardware Implants and Bloomberg falsehoods
This video was presented at the 35C3 conference in Germany last week. The presenter is highly credible on the topic. Hardware implants and supply chain attacks have been in the news recently, but how feasible are they and what can we do about them? In this talk we’ll examine the design of a proof of […]
The post Response: Modchips, Hardware Implants and Bloomberg falsehoods appeared first on EtherealMind.
AT&T Sells Its Colocation Data Centres
AT&T has finally found a buyer for its colocation business. AT&T Inc announced today that it has completed the sale of its data center colocation operations and assets to Brookfield Infrastructure and its institutional partners (“Brookfield”). The company previously announced a strategic alliance with Brookfield that included the transfer of these operations and assets. Why […]
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Nokia Names Fixed Networks Biz Leader, Access Networks Remains Headless
Sandra Motley was named president of the Fixed Networks Business organization. She previously served as COO of that group and will now report directly to Nokia President and CEO Rajeev Suri.
Flor de Ceibo Conecta2: Sharing Experiences
Today’s guest author is María Julia Morales González, the “Flor de Ceibo Conecta2” project manager and a professor at the Department of Sociology and Interdisciplinary Space of the University of the Republic Uruguay.
The Internet Society Uruguay Chapter, in partnership with the The University of the Republic and the Consejo de Formación en Educación, as well as with financial support from the Beyond the Net Funding Programme, has taken significant steps to help children and teenagers to develop digital skills in a creative and innovative way in three of the nineteen segments in which Uruguay is politically divided: Paysandú, Rivera, and Salto. Their project Flor de Ceibo Conecta2 aims to train young people from disadvantaged communities using digital resources in creative and challenging classes to help them improve their everyday lives and expand their chances for a better future.
Hoy queremos acercarles 2 experiencias que estamos transitando en el Proyecto Flor de Ceibo Conecta2.
Una de ellas se desarrolla en la ciudad de Salto en el liceo N° 7 del Barrio Artigas, zona de alta vulnerabilidad. Allí el equipo está trabajando en el uso de redes sociales y en particular en este taller en referencia al uso de whatsapp.
SK Telecom Gets the 5G Ball Rolling in 2019
The 5G juggernaut rumbles on with South Korea getting a headstart on announcements in the new year. Meanwhile, posts on Reddit indicate AT&T's 5G is underwhelming, so far.
History Of Networking – EVPN – Rahul Aggarwal
EVPN is one of the more promising protocols to come out in recent history. In this episode, Rahul Aggarwal joins Network Collective to discuss the history of EVPN and how it came to be.
Rahul Aggarwal
Guest
Russ White
Host
Donald Sharp
Host
Outro Music:
Danger Storm Kevin MacLeod (incompetech.com)
Licensed under Creative Commons: By Attribution 3.0 License
http://creativecommons.org/licenses/by/3.0/
The post History Of Networking – EVPN – Rahul Aggarwal appeared first on Network Collective.
The Week in Internet News: India Pushes for Sites to Remove ‘Unlawful’ Content, Break Encryption
Not this again: India’s government wants websites and social media platforms to remove content regulators determine as “unlawful” within 24 hours and to create automated tools to identify this material, BuzzFeed reports. The government also wants the tech companies to trace the source of the content, requiring platforms like WhatsApp to break encryption. This follows passage of an Australian law that forces online services to provide the government there with encryption workarounds.
The Wire of India defends the proposal, however, saying it’s aimed at holding websites and social media platform more responsible for the content they distribute.
More blocking: The government of Sudan has shut down most Internet access in the country and blocked access to social media platforms, Rogue Media Labs says. The government blamed the shutdown on massive protests over income inequality and other issues.
Missed assignments: In a related story, some college students in the Indian region of Kashmir have missed deadlines for submitting online application forms of their bachelors of education examination because of frequent and lengthy Internet shutdowns there, reports Kashmir Reader. Students are asking the University of Kashmir to extend its deadline.
Blockchain vs. national security? An ex-CIA official is targeting blockchain, saying the Continue reading
SDxCentral’s Top 10 Articles of 2018
Cisco lays off hundreds in California; Cisco updates its routers with SD-WAN; and all the details of Verizon's outsourcing deal.
Smart Data: The Secret Weapon Underpinning the Cloud
By applying the insights of smart data, businesses can add strategic value from the cloud, while also gaining the flexibility, agility, and scalability needed to remain competitive.
2019 Is The King of Content
2018 was a year full of excitement and fun. And for me, it was a year full of writing quite a bit. Not only did keep up my writing here for my audience but I also wrote quite a few posts for GestaltIT.com. You can find a list of all the stuff I wrote right here. I took a lot of briefings from up-and-coming companies as well as talking to some other great companies and writing a couple of series about SD-WAN.
It was also a big year for the Gestalt IT Rundown. My co-host with most Rich Stroffolino (@MrAnthropology) and I had a lot of fun looking at news from enterprise IT and some other fun chipset and cryptocurrency news. And I’ve probably burned my last few bridges with Larry Ellison and Mark Zuckerberg to boot. I look forward to recording these episodes every Wednesday and I hope that some of you will join us on the Gestalt IT Facebook page at 12:30 EST as well.
Content Coming Your Way
So, what does that leave in store for 2019? Well, since I hate predictions on an industry scale, that means taking a look at what I Continue reading
CircleCI, Docker and Systemd
I have been battling to get the combination of CircleCI, Docker and systemd to play together. After much frustration, I have a workable solution. Machine Executor, privileged: true, cgroup passthrough, and disabling AppArmor.
Background: CircleCI for Ansible Linting & Checks
In the StackStorm team we use CircleCI with most of our repositories. We check things like code style checks, and run unit tests. With every Pull Request we trigger these checks, and checks must pass before merging. Some repos also use CircleCI for post-merge deployment steps.
We use Ansible and Terraform to manage some of our internal infrastructure. All configurations are stored in Git. All changes to that configuration must be submitted as a Pull Request. All PRs need approval, and all commit checks must pass. We use CircleCI to run these commit checks.
We run multiple checks, but for Ansible playbooks, they include using ansible-lint, and ansible-playbook --syntax-check. We then spin up a Docker container using CircleCI and run some of our playbooks twice, checking that it passes both times, and that the second run records no changes.
Here’s a snippet of some of our CircleCI configuration:
version: 2
jobs:
build:
working_directory: Continue reading